String case



FIG. 1 is a front perspective view of a string case showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view of the embodiment of FIG. 1; and,

FIG. 4 is a side elevation view of the embodiment of FIG. 1. 

The ornamental design for a string case, as shown and described. 